Evad3rs have recently released an updated version of their untether in Cydia that contains a bunch of improvements. The most important is probably a tweak that saurik requires to fix the problem with MobileSubstrate and make it fully functional.

Saurik has warned the iOS 7 users and jailbreakers not to install the unofficial MobileSubstrate patches that begin to appear on the Internet. The reason for such warning is quite simple - MobileSubstrate hasn’t yet been updated to work with Apple’s new operating system and that can lead to serious consequences.

In the six weeks since evasi0n was released, however, close to 18 million devices have already been jailbroken, according to data from Jay Freeman, the administrator of the Cydia app store for jailbroken devices. He says he’s counted 18.2 million unique devices running iOS 6 visiting Cydia, including 13.8 million iPhones, 3.4 million iPads, and 1.1 million iPod Touches. Those numbers vastly exceed previous jailbreaks such as Jailbreakme 3, a popular hacking tool for iOS released in the summer of 2011 that was used on around 2 million devices, according to a count at the time by creator Nicholas Allegra.

The 'dream team' of iPhone hackers has made more progress on the A5 jailbreak with planetbeing just announcing that they're out of Apple's sandbox.

And we're out of the sandbox with @saurik's invaluable help! (well, at least there's a PoC) Turning out more complex than X-Gold 618.

pod2g also mentioned progress in twitter:

@planetbeing escaped from the sandbox with the help of @saurik. Thanks to their awesome work, there should be nothing left blocking for the A5 jailbreak. Now it should be a matter of days. Still no precise ETA of course.

Cydia is the well-known alternative App Store for jailbroken devices, now installed on 10-15 million iOS devices accounting for roughly 9% of the total iOS userbase worldwide, according to the latest numbers shared by Cydia’s creator and main developer, Jay Freeman aka Saurik. 1.5 million users log in Cydia on a daily basis. So it’s not surprise that such large companies like Toyota have seen the potentialities of the Cydia and now wish to promote their brand and products via Cydia or invest into an advertising campaign. They’re simply looking for new ways of promoting their products, for example, Scion, Toyota affiliate, already created the theme for jailbroken devices in order to advertise their new 2011 tC vehicle.